Help required: vintage 18v EHX EM off a PSU.

Gassage

All,

I have this MLC Power stations.
I know it does 18v for the EM
I know also that ifI get the polarity wrong into the EM I fry it.

I have pretty much every lead going and the EM takes a jack input

How do I do this?
Details of my PSU below.

http://www.marklcustom.com/en/guitar-systems/power-station

robinbowes

The EM PSU is tip positive. So, you need a whatever-the-output-of-the-PSU-is to jack with tip positive.

R.